| 
				Amphipholis pugetana (Lyman, 1860)			 | 
			
				Amphipholis pugetana  (p. 105 )			 | 
		
				
			| 
				Amphipholis squamata (Delle Chiaje, 1828)			 | 
			
				Amphipholis squamata  (p. 105 )			 | 
		
				
			| 
				Amphiporus bimaculatus Coe, 1901			 | 
			
				Amphiporus bimaculatus  (p. 94 )			 | 
		
				
			| 
				Amphiporus formidabilis Griffin, 1898			 | 
			
				Amphiporus formidibalis  (p. 94 )			 | 
		
				
			| 
				Amphiporus imparispinosus Griffin, 1898			 | 
			
				Amphiporus imparispinosus  (p. 94 )			 | 
		
				
			| 
				Amphissa columbiana Dall, 1916			 | 
			
				Amphissa columbiana  (p. 99 )			 | 
		
				
			| 
				Amphissa versicolor Dall, 1871			 | 
			
				Amphissa versicolor  (p. 99 )			 | 
		
				
			| 
				Ampithoe lacertosa Bate, 1858			 | 
			
				Ampithoe lacertosa  (p. 102 )			 | 
		
				
			| 
				Analipus japonicus (Harvey) M.J. Wynne			 | 
			
				Analipus japonicus  (p. 88 )			 | 
		
				
			| 
				Ancula gibbosa (Risso, 1818)			 | 
			
				Ancula gibbosa  (p. 101 )			 | 
		
				
			| 
				Anidolyta spongotheras (Bertsch, 1980)			 | 
			
				Anidolyta spongotheras  (p. 100 )			 | 
		
				
			| 
				Anisodoris lentiginosa Millen, 1982			 | 
			
				Anisodoris lentiginosa  (p. 100 )			 | 
		
				
			| 
				Anisodoris nobilis (MacFarland, 1905)			 | 
			
				Peltodoris nobilis  (p. 100 )			 | 
		
				
			| 
				Antalis pretiosa (Sowerby, 1860)			 | 
			
				Antalis pretiosum  (p. 101 )			 | 
		
				
			| 
				Antho graceae (Bakus, 1966)			 | 
			
				Anthoarcuata graceae  (p. 91 )			 | 
		
				
			| 
				Antho karykina (De Laubenfels, 1927)			 | 
			
				Plocamia karykina  (p. 91 )			 | 
		
				
			| 
				Anthopleura artemisia (Pickering, 1846)			 | 
			
				Anthopleura artemisia  (p. 92 )			 | 
		
				
			| 
				Anthopleura elegantissima (Brandt, 1835)			 | 
			
				Anthopleura elegantissima  (p. 92 )			 | 
		
				
			| 
				Anthopleura xanthogrammica (Brandt, 1835)			 | 
			
				Anthopleura xanthogrammica  (p. 92 )			 | 
		
				
			| 
				Anthothela pacifica (Kükenthal, 1913)			 | 
			
				Anthothela pacifica  (p. 93 )			 | 
		
				
			| 
				Aphrocallistes vastus Schulze, 1887			 | 
			
				Aphrocallistes vastus  (p. 91 )			 | 
		
				
			| 
				Aphrodita negligens Moore, 1905			 | 
			
				Aphrodita negligens  (p. 95 )			 | 
		
				
			| 
				Aplidiopsis pannosum (Ritter, 1899)			 | 
			
				Aplidiopsis pannosum  (p. 106 )			 | 
		
				
			| 
				Aplidium californicum (Ritter & Forsyth, 1917)			 | 
			
				Aplidium californicum  (p. 106 )			 | 
		
				
			| 
				Aplidium solidum (Ritter & Forsyth, 1917)			 | 
			
				Aplidium solidum  (p. 106 )			 | 
		
				
			| 
				Apomatus geniculata (Moore & Bush, 1904)			 | 
			
				Apomatus geniculata  (p. 95 )			 | 
		
				
			| 
				Apomatus timsii Pixell, 1912			 | 
			
				Apomatus timsii  (p. 95 )			 | 
		
				
			| 
				Apostichopus californicus (Stimpson, 1857)			 | 
			
				Parastichopus californicus  (p. 105 )			 | 
		
				
			| 
				Apostichopus leukothele (Lambert, 1986)			 | 
			
				Parastichopus leukothele  (p. 105 )			 | 
		
				
			| 
				Arctonoe fragilis (Baird, 1863)			 | 
			
				Arctonoe fragilis  (p. 95 )			 |